微生物群形状的中性粒细胞衰老调节了膀癌中的性二态性
Qingchen Zhu1, Guiheng Zhang1, Ming Cao2
1CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.
Nature immunology
|April 11, 2025
概括
肠道细菌Alistipes shahii及其代谢物卢拉西消除了女性免疫抑制性中性粒细胞,改善了膀癌免疫力. 男性缺乏这种保护作用,导致结果较差.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物组研究 微生物组研究
- 癌症生物学 癌症生物学
背景情况:
- 在非生殖癌症中观察到性别差异,但涉及微生物组和免疫系统的潜在机制仍然不清楚.
- 衰老类中性粒细胞 (RLSNs) 在男性膀瘤中积累,抑制抗瘤免疫力,与预后不佳相关.
研究的目的:
- 研究微生物组在性别特异性膀癌差异中的作用.
- 确定RLSN有助于免疫抑制和男性膀癌患者的不良结果的机制.
主要方法:
- 识别和表征RETNLG+LCN2+衰老类中性粒细胞 (RLSNs).
- 对肠道微生物组组成与性别和膀癌相关的分析.
- 研究Alistipes shahii及其代谢物卢拉西对RLSN及其抗瘤免疫力的影响.
主要成果:
- RLSN优先聚集在男性膀瘤微环境中,产生免疫抑制作用.
- 肠道细菌Alistipes shahii,在女性中更为普遍,产生卢拉西.
- 卢拉西针对RLSN中的LCN2,诱导铁亡,消除RLSN,并促进女性的抗瘤免疫力.
结论:
- 一个微生物群-lurasidone-LCN2电路调节膀癌的性别差异.
- 卢拉西能够消除RLSNs并增强抗瘤免疫力,这突显了它对男性膀癌患者的治疗潜力.
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